Stump-puller.



W. KILBORN.

STUMP FULLER.

APPLICATmN FILED 001.31. 1914.

1,159,953. Patented Nov. 9, 1915.

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WARREN KILBORN, 0F SCOTIS MILLS, OREGON.

STUIVIP-PULLER.

YSpecification of Letters-Patent.

Patented Nov. 9, 1915.

Application ledctober 31, 1914. SeraI No. 869,652.

To all 'Lo/0m t may concern:

Be it Aknown that I, JAHREN KILBORN, a citizen of the United States, residing at Scotts Mills, in the county of .Marion and State of Oregon, have invented Anew and useful Improvements in Stump-Pullers of which the following is aspecification.

This invention relates to stump pullers, and ithasparticular reference to that class of stump pullers wherein winding drums having ratchet wheels connected therewith are driven by pawls actuated by levers for the purpose of developing power.

The present .invention has for its iObject to provide an improved construction'whereby a winding drum is provided with aplurality of ratchet wheels or rims, any one of which may be engaged by a pawl connected with a lever, said pawl being adapted to be situated at various distances from the fulcrum of the lever, thus enabling the proportionate amount of power and speed to be regulated by simply adjusting the pawl to various positions on the lever.

A further object of the invention is to simplify7 and improve the general construction and operation of the machine.

lVith these and other ends in view which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claims.

In the accompanying drawing has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the claims may be resorted to when desired.

In the drawing, Figure 1 is a top plan view of a machine constructed in accordance with the invention. Fig. 2 is a side elevation with parts broken away. Fig. 3 is a top plan view enlarged of the operating lever and the pawls connected therewith. Fig. 4 is a sectional detail view taken on the line 4`4 in Fig. 3.

Corresponding parts in the several figures are denoted by like characters of reference.

The frame of the machine includes a cross bar 10 and side members 11, which latter are provided with bearings for a shaft 12 on which two winding drums 13, 13 are supported for rotation, each 0f said drums carrying a wheel 14. The winding drums are spaced apart by a sleeve or washer 15. Each ofthe wheels 14 carries a plurality of ratchet rims 16, two of such rims being shown on each wheel, although more be used when preferred.

The cross-bar 10 supports a bracket 17 on which is fulcrumed a lever 1S, said fulcrum being preferably arranged midway between the wheels 14 which latter may be mounted on the inner or proximate ends of the winding drums, 4as `shown in the drawings, although said wheels may be differently positioned when preferred. The bracket 17 is also preferably extended downwardly and forwardly, as shown at 17 to afford an additional bearing for the shaft 12, thereby materially strengthening and reinforcing the structure. Hingedly connected with the lever 18 by means of pintles 19 are plates 20, said plates being disposed in registry with the wheels 14. Pivotally connected with each hinge plate by means of a pin or bolt 21 is a pawl 22 adapted to engage one of the ratchet rims 16, each of the plates 20 being provided with a plurality of perforations 23 for the passage of the pin or bolt 21 in order that by changing the position of the latter, the pawl 22 may be placed in engagement with any one of the ratchet rims 16.

It will be readily seen that by changing the position of the pawl 22, the distance between said pawl and the fulcrum of the lever will be varied, thereby increasing or decreasing the leverage, as the case may be. Thus, when the pawl 22 is in engagement with one ratchet rim of a wheel 14, each throw of the lever will move the wheel to the extent of, say, one tooth, while when the pawl is placed in engagement with another ratchet rim each throw of the lever will move the wheel to the extent of, say, two teeth. By increasing the number of ratchet rims on each wheel and the corresponding adjustment of the pawls, greater range of relative control of speed and power may be obtained. To prevent reverse rotation of the winding drums, gravity check pawls 24 are provided, the same being pivoted on the side members of the frame.

A cable 25 is provided, the ends of said cable being connected with the two drums the stump.

13, While on the cable is guided apulley block 26 having attaching means, such as a hook 27, which may be connected in any convenient way with the stump that is to be extracted. It will be seen that by` rocking the lever 18 the drums 13 will'be alternately actuated to wind thereon the cable 25, there.-

Y tion, a plurality of ratchet rims on said drum, a lever ulcrumed adjacent to the drum, a plate hingedly connected with the lever, and a pawl connected pivotally and adiustably with the plate to engage any one of'the ratchet. rims.

2. A frame including side members, a

Copies of this patent may be obtained for five cents each, by addressing the Washington, D. C.

, and forward extension,

for rotation 1n the vside members' and havingA from placel cross bar and a bracket having a downward a shaft supported an additional bearing in the Vextension of the bracket, winding drums tation on the shaft, one at each side bracket extension, each drum having a plurality of ratchet rims connected therewith, a lever ulcrumed on the bracket, pawls connected with said lever, adjustable with respect to the fulcrum thereof, one pawl adapted to engage a ratchet rim of each of Y the drum, and check pawls ulcrumed on the Jframe in engagement with a ratchet rim of each drum'.

1n testimony whereof atiiX myV signature in presence of two witnesses.

WARREN KILBORN.

lVitnesses:

Y JOHN F. BRooHA,

M. B. Rromn Commissioner of Patents,

supported for ro- 

